Unfortunately, we have to prepare for a future where this kind of stuff is everywhere. We will have to rethink how trust is modeled online and offline.
I agree.
I'd be curious to hear why its advocates believe that this is a net win for society.
it doesn't need to be. are video games a net win for society? is porn?
unfortunately I think you're right, the cons massively outweigh the pros.
One constructive use would be making on-demand audiobooks.